INTRODUCTION. 81 



From 1820 shipments of clover seed have been made 

 from Philadelphia to Liverpool, and different parts 

 of the United Kingdom. It is quite probable that 

 the species or variety known in England, as the 

 large American cow clover was introduced about 

 tins" pencil! 1 ^er"aiFe^rpFe"senT, three distinct 

 species pf^j^L, clover, inJBngland, which are culti- 

 valiecMby agriculturists, viz : Trifolium PraJenseT 

 Trifolium Perrenne'lind Trifolium Medium, It will 

 be seen by a comparison of tteir analyses, that there 

 is not much difference in their nutritive values. 

 There is however, in their perrennial ^ropgrties, the 



In this country allhe^presant time it may be said 

 'that red clover is simply divided into two classes, 

 the large ^Qii^^mmothjfe-and the trifolium pratense 

 or common clover. Parties who have made a spec- 

 iality of growing clover seed for market in the west- 

 ern part of the state for the past forty years make no 

 'other distinction than the above. The two kinds 

 are essentially different, however, in their properties 

 of growth, &c., which will be treated of under its 

 proper head. Of the many substitutes for clover, 

 which are grown in England, such as lucern, sain- 

 foin, burnet, &c., few of them are cultivated with 

 any degree of success in this country. Although 

 lucern seems to be far better adapted to .the climate 

 of this country than that of Britain. i~ Sainfoin I 

 have found to grow well here this spring when other 

 grasses made very little progress. Sainfoinvhas 

 been cultivated in England since 1651, and is still 

 in high repute. Alyske clover is not receiving the 

 attention to which its superior merits entitle it. 

 The yellew clover or trefoils growing naturally on a 



